Float Valve (Flapper Type Check Valve)
This Float Valve is normally installed in a standard bore-back of the bit sub, to provide fluid flow control at the bottom of the drill stem. It also prevents backflow of cuttings from plugging th...

forged steel swing cheek valve
Forged steel check valve, Check Valves can automatically stop the medium backflow, through the force of the medium can open the disc of valves, check valves are open in this condition; through the...

Product Summary

Backflow check valve, is also named check valve. A check valve is a type of valve which only permits flow in one direction.

These valves are often designed for safety reasons, to prevent backflow and to ensure that someone operating a system knows which direction fluids and gases are flowing in. Check valves can also be used for tasks like creating leak tight seals, which can be an important safety or convenience future.

One of the most common styles is the ball valve, made by mounting a ball over a disc with a small hole in it. Liquid or gas can flow through the hole and around the ball, but when it tries to push the other way, it shoes the ball up against the disc, creating a seal.